High energy scattering processes are as unique theoretically as they are experimentally [1]}, [2]}, [3]}. They give direct access to the interactions among SM particles with 10 TeV energy, which in turn provide indirect sensitivity to new particles at the 100 TeV scale of mass. In fact, the effects on high-energy cross sections of new physics at energy \(\Lambda \gg E_{\rm {cm}}\)  generically scale as \((E_{\rm {cm}}/\Lambda )^2\)  relative to the SM. Percent-level measurements thus give access to \(\Lambda \sim 100\)  TeV. This is an unprecedented reach for new physics theories endowed with a reasonable flavor structure. Notice in passing that high-energy measurements are also useful to investigate flavor non-universal phenomena, as we will see below, and in Section .
